Chris Muller uploaded a new version of Kernel to project The Trunk:
http://source.squeak.org/trunk/Kernel-cmm.580.mcz

==================== Summary ====================

Name: Kernel-cmm.580
Author: cmm
Time: 3 May 2011, 9:38:48.056 am
UUID: 88d42e3f-ca37-4d1b-87d6-76ed21f69864
Ancestors: Kernel-cmm.579

Restored Behavior>>whichMethodsStoreInto:.

=============== Diff against Kernel-cmm.579 ===============

Item was added:
+ ----- Method: Behavior>>whichMethodsStoreInto: (in category 'testing method dictionary') -----
+ whichMethodsStoreInto: instVarName 
+ 	"Answer a collection of selectors whose methods access the argument, 
+ 	instVarName, as a named instance variable."
+ 	"Point whichMethodsStoreInto: 'x'."
+ 	| instVarIndex |
+ 	instVarIndex := self allInstVarNames
+ 		indexOf: instVarName
+ 		ifAbsent: [ ^ IdentitySet new ].
+ 	^ Array streamContents:
+ 		[ : stream | self methodDict keysAndValuesDo:
+ 			[ : eachSelector : eachMethod | (eachMethod writesField: instVarIndex) ifTrue: [ stream nextPut: eachMethod ] ] ]!